Zinc oxide desulfurizer for hydrogen production equipment
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I would like to ask: how often should the zinc oxide desulfurizer in a hydrogen production unit using coked dry gas be replaced? We’ve only been using it here for less than 3 years, but it seems like the sulfur has already penetrated
The typical design service life for desulfurization tanks is one year; however, this depends on your design specifications, operating load, and the sulfur content of the raw materials. Three years is a completely normal duration as well
Typical design firms calculate based on the sulfur content of the raw gas provided by the user; the capacity is generally designed to cover 2.5 to 3 years of processing volume. Excessive equipment investment leads to higher costs, while too low a capacity results in frequent replacements that increase downtime of the plant. The replacement frequency of zinc oxide needs to be determined according to the sulfur content of the gas after treatment.
It is usually a 3-year cycle; if the sulfur content in the feed gas is low, this period can be extended
The operating cycle of the desulfurizer is determined based on its sulfur capacity; under operating conditions of 300°C, this capacity is approximately 30% of the desulfurizer’s weight. Therefore, if the sulfur content in the feed gas is low, the operating time can be extended.
The design life is generally 2-3 years; the sulfur capacity actually does not reach the 30% claimed by the manufacturer, being only 20% in reality
1. It depends on the sulfur capacity and density of the desulfurizing agent. 2. It depends on the sulfur content in the feed gas. 3. It depends on the operating temperature of the desulfurizing agent; there is a significant difference between normal temperatures and medium temperatures
Dear forum members, I’m encountering an issue with zinc oxide desulfurization agents. During the operation of the equipment, what should be used as the criterion for replacing these agents: the sulfur content in the desulfurization agents themselves or the sulfur content in the medium? If it’s the sulfur content in the zinc oxide desulfurization agents that needs to be measured, what method should be employed? I’m seeking urgent help; thank you!
Analyze the sulfur content in the exhaust gas.
Controlling the sulfur content in the raw materials is crucial; generally, a design lifespan of 3 years is adopted, but if the limit is exceeded, it can be damaged in just 3 hours